The Lakeside Company uses a weighted average process costing system. The following data are available -0- 20,000 16,000 Beginning inventory Units started in production Units finished during the period Units in process at the end of the period (complete as to materials, y complete as to labor and overhead) Cost of materials used Labor and overhead costs 4,000 $ 35,200 $ 37,400 Total cost of the 4,000 units of the ending inventory: Select one: a. $9.240 O b. $14,520 c. $8.910 d. $15,840